Opaque enamel or glaze composition.



H0 Drawing.

canto nenznnn, or SEELZE, NEAR nanovnn, GERMANY, Assreuoa re a. m: nan-N, ennmrscnn rnnnrmmsr, e. m. 3. genes snnnzn, man. Hermann-Emmy.

omens ENAMEL on onnza comrosrrron.

memes.

To all duh-om it may concern:

Be it known that-I, CARLO BAEZNER, a citizen of the Swiss Confederation, and residin at- Seelze, near Hanover, Germany,

'have invented a certain new and usefullmproved Opaque Enamel 'or Glaze Composition, of which the following is a specificalawn.

The subject-matter of my invention is an imgroved' process of; making opaque white an I have found that even small, admixtures of.

it .suflice tor imparting complete opacity to the enamel. An p added to the flux-has been found: to bequite suflicient, whether the flux was perfectly transparent. or whether it had been made turbid beforehand during the melting process with other materials, e. g. cryolite.

The sulfid of zinc preferably added when grinding the 'enamehpowder. .Not only canwhite enamels be obtained in this manner, but also. any desired colored enamels and glazes by' mixing the sulfid-of zinc with known coloring matter or oxids. The

Specification of Letters mutant.

admixture of about 5% glazes can be burnt in or baked like ordinary Patented Sept. an, new.

. Application-filed DeEember 20, 1913. Serial No. 808,007.

muflle colors on sheet-iron, stoneware, porcelain and glass.

- When lu'minous sulfid of zinc is employed which scarcely diiferschemically from the ordinary sulfid of zinc, enamels of special phosphorescence are obtained. M This phosphorescence occurs, as usual. when the articles in question are previously illuminated: Phosphorescence without previous illumination can be obtained by admixing small quantities of a radio-active substance. The radio-active substance does not require to be mixed directly with the sufid of zinc, but may be applied subsequently in the form of a solution to the already enameled articles and then baked; or the substance may be in a coating of glaze applied over the enamel. I claim t.

1. An improved opaque enamel or glaze 1 composition comprising a vitrifiable material admixed with sulfid ofzincr 2. An improved opaque enamel or glazed composition comprising a vitrifiable material admixed with sulfid of zinc having luminous properties.

In testimony whereof, I aiiix my signature in the presence of two witnesses.

p e CARLO ,BAEZNER.

Witnesses:

"1. 'HENDLY R, Auousr EGGEMANN. 

